Sapulpa occupies an area over which six nations have flown their flags – Spain, France, England, Mexico, the Choctaw Indian Nation, and the United States. Chief Sapulpa, the area’s first permanent settler, was a full-blood lower Creek Indian of the Kasihta Tribe in Osocheetown, Alabama. When the Atlantic and Pacific railroad line extended to the area in 1886, it was called “Sapulpa Station” in honor of Chief Sapulpa who had befriended the railway workers. In 1889 a post office named Sapulpa was opened and the town was incorporated in 1898. In 1905 the discovery of Glenn Pool oilfield, six miles southeast of Sapulpa, fostered the greatest period of growth. The oil boom, the railroad, and the addition of two brick and four glass plants all combined to transform Sapulpa into a community of 20,000 by the mid-1920s. Most of the buildings in downtown Sapulpa were erected during this boom period.